Oprah Winfrey, Rihanna, and More Celebrity Twitter Pictures (PHOTOS)

Tony Hale, Gavin Rossdale, Emma Bunton, and more of this week’s best celebrity Twitter photos.

Tony Hale hangs out with his comedic peers, Gavin Rossdale meets the Indianapolis Colts, and Emma Bunton puts the pedal to the metal. Plus, see more of this week’s best celebrity Twitter photos.

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Rihanna ‏

“Bitchin witcho bitch ass!!!” wrote Rihanna about the selfie she tweeted to her fans. RiRi posed by a windowsill with an empty wine glass and a cigarette lit between her fingers in this photo. Each of her albums, except for one, have hit the million-album-sales mark, including her latest, Unapologetic, as reported by Billboard.

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Alessandra Ambrosio ‏

Always on the forefront of fashion, Alessandra Ambrosio donned a wide-brimmed fedora for this snapshot she tweeted, revealing wardrobe racks full of clothes in the background at a photo shoot. The model was recently found at the Cannes film festival, working at AmfAR’s Cinema Against AIDS gala to raise money for AIDS research.

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Emma Bunton

As the Spice Girls would say, “Spice up your life!” Emma Bunton, formerly known as Baby Spice, did just that as she and Kimberley Walsh of U.K. pop outfit Girls Aloud raced around the Heart 106.2 London radio station on pink bikes in this Twitter pic. Bunton hosts the Heart Breakfast show on the dial.

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Kevin Hart

Kevin Hart is channeling his inner fashion diva. The comedian rocked a pair of canary yellow pants, pairing them with some stunner shades, in this Twitter snapshot. He captioned it, “It’s summer time bitches...Y'all ain’t ready for this ‘Yellow Pants’ life...” Hart seems to be in better spirits since his April arrest for a DUI, calling it a “wake-up call,” in a tweet.

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Gavin Rossdale

Mayday, Mayday! Gavin Rossdale caused a bit of a stir in Indianapolis at the annual May Day music festival run by local radio station X103. As the Bush frontman left the stage to mingle with the crowd during a performance, fans rushed in and mobbed him, and security guards had to escort the singer out. In this Twitter pic he posted, he was in a much calmer state, posing with Indianapolis Colts quarterback Andrew Luck.

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Carmen Electra ‏

These divas look flawless! Carmen Electra posed with rapper Azealia Banks in this photo she tweeted to fans. Banks performed at the upscale Life Ball charity event in Vienna, wearing a kitty-inspired furry number on stage.

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Lea Michele

“All hands on!” tweeted Lea Michele about this photo. It takes a village to raise a child and a team of great makeup artists and stylists to prep for a photo shoot. The star of Fox’s Glee got dolled up to shoot cover photos for her upcoming memoir, Brunette Ambition.

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Oprah Winfrey ‏

Stars, they’re just like us! They also think Hugh Jackman’s a hunk! Oprah Winfrey ogled the X-Men star and gingerly touched his abs in this snapshot she tweeted, captioning the photo, “Having lunch convo with hughjackman …omg those abs are Real!”

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Christopher Mintz-Plasse

Ladies, ladies, there’s enough of McLovin to go around! The Kick-Ass 2 super villain and Superbad star took a moment to lay on the grass, enjoying a trip to Ireland with makeup artist Maeve Showalter, in this snapshot he tweeted.

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Andy Cohen

A scruffy and silver-haired Andy Cohen asked life’s deepest question in his selfie, captioning it with “Must I shave???”‏ The host of Bravo’s Watch What Happens Live recently got into a Twitter spat with Anthony Bourdain of Bravo’s Top Chef, even dragging HBO’s Treme’s co-creator David Simon into the mix, on the fiery topic of shooting in Louisiana and the funding behind it, as reported by Grantland.